James higgins



@nimh faire @anni ffii.

IMPROVEMENT IN SOLAR TIME INDICATORS.

die rlgetule referrer 1n in this: Eaters xtmt mit making peut nf fige same.

TO ALL WHOM IT MAY CONCERN:

Be it known that I, JAMES HIGGINS, of East Cambridge, in the county of Middlesex, and State of Massachusetts, have invented a new and improved Solar Time Indicator and I do hereby declare that the following is a full, clear, and exact description thereof, which will enahle others skilled in the art to make and use the same, reference being had to the accompanying drawing, forming part of this specification.

The drawing is a perspective view of my invention. l

My present invention relates to a device vfor indicating the time of dayhy the sun.' It consists of two i rings, the one encircling the other; tho, outer one having a slot cut in a circumferential direction in one side,

and through the inner one is madeanaperture,v which latter, on moving the inner ring, will travel in the direction of said slot; the said inner ring carrying a screw, or the like, for operating it, and a scale mitrked with the xours und xracti'onal'partsof hom-s.

A designates the outer, and B the inner, ring. In the present instance they are both metallic strips, of a proper width. In the outer one a slot, a, is cut. It is on one side above the plane of a horizontal axial line, if such be drawn through the device when it is held in the proper position for indicating the time. Through the inner ring B an aperture, b, is made, so that Aon moving the inner ring it will travel along the slot a. A setscrew, C', screwing into the inner ring, and passing'through a slot, in the outer ring, and having a shoulder which, when it is screwed down hard, will strike against tho periphery of the outer ring, so as to fasten the two rings together, or, more correctly speaking, prevent the inner ring movingV when set, is provided. D D' are graduated time-tables, marked upon the ring B opposite the aperture b. For the morning, the numbers commence on one side and run in one direction, and forthe afternoon, the reverse is the casef f A cord, d, is

secured to the top of the device by which'to hold it up. In using the indicator, hold the string in one hand and steady it with the fingers of the other till it hangs plumb; then turn the ring toward the sun so that a. sunbeam may pass through the aperture b and strike against the scale on the inner ring, and this indicates the time of day. By regulating the device once a day, say at twelve, m., which is done by moving the aperture so that the sunheam, when the sun is in the' meridian, will be caused to strikeon the twelve oelock. mark, the indicator will indicate the solar timecorreetly for that day. -An adjustment every few days will give the time sufficiently near correctness for all practical purposes. A By thus regulating the device it will serve to indicate solar time indifferent latitudes. t

What I claim as new, and desire to secure by Letters lrlatent, isl The combination of the ring -A, having slots a and c in it, with the ring B provided with the scales D 'D' and set-screw C, the same constituting a solar time indicator, substantially as herein shown and described. JAMES HIGGINS.

Witnesses:

WM. A. Mumien, K. S. Gitarren.A 

